Top Definition
A person shrouded head to toe in rags and carrying a weed-wacker or other weapon. Commonly sighted on U.S. military bases in Japan.
by Anonymous October 05, 2003

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A person of Latin decent shrouded head to toe in rags and carrying a weed-wacker or other lawn and/or garden care weapon. Often sighted neighborhoods driving trucks with some form of lawn service sign on them. Commonly used as a racial slur.
Those *amn grass ninja's need to learn english.
by Blindey August 23, 2007

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Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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Person who does not ever buy weed, but always smokes others. Mooching off of smoking circles or other social groups.
"Was Roy at the party?"
"Yeah man, he was a Grass Ninja like always and smoked all our weed and left."
by ThatGuy85 March 29, 2016

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt